Atomic Force Microscope – an Effective tool for Measuring Piezoelectric Constants of soft Materials

In this work, PFM is used for evaluating the piezoelectric constant of P(VDF-TrFE) - which is part of the tactile sensors that we developed in past. The piezoelectric constant (d33) and the electrostictive parameter (γ) are measured by applying AC+DC voltage across the polymer and detecting the deformation of sample